UPDATE: Several million people are in for a rude awakening this spring.

We eliminated an especially cruel tax that fell mostly on Americans making less than $50,000 a year — forcing them to pay tremendous penalties simply because they could not afford government-ordered health plans. We repealed the core of disastrous Obamacare — the individual mandate is now gone.

I'm not going to go try and explain yet again why the ACA's Individual Mandate was included in the law in the first place or why repealing it is such a bad idea; I've embedded my video explainer above to do that.

...the mandate penalty repeal only applies as of 2019. Individuals remain responsible for having insurance or paying the penalty for the 2017 filing season and for 2018.The IRS has announced that it will reject electronic filings of taxes for 2017 that do not claim coverage or an exemption, or include a payment of the penalty. The repeal is being widely publicized, however, and there will undoubtedly be widespread confusion as to when it will be effective. It is likely that many people will fail to apply for coverage or drop or fail to effectuate coverage that they already have. The effect of the mandate repeal will undoubtedly be felt before it goes into effect.

Yes, that's right: Millions of people who failed to make sure they were enrolled in ACA-compliant healthcare coverage are going to file their tax returns this spring thinking that they don't have to pay a penalty for not doing so only to discover that the penalty is still in effect.

Then, next spring (assuming the IRS sticks to its guns on the issue and there's no further legislative changes made), anyone who didn't #GetCovered for 2018 are also going to have to pay the penalty (which, again, is either $695 per adult/$348 per child or 2.5% of their household Modified Adjusted Gross Income).

The damage caused by the mandate being repealed to the individual market risk pool (and rate premiums) will be felt this November, when people start shopping around for 2019 coverage...but the actual "benefit" (i.e., those who don't get covered not having to pay the mandate penalty) won't show up until spring 2020.

As part of the Republican tax reform plan signed into law at the the end of 2017, lawmakers eliminated the ACA’s requirement that nearly all individuals have health insurance or else pay a fine, known commonly as the individual mandate. The tax plan reduced the individual penalty for not having health insurance to zero beginning in 2019, effectively repealing the least favorable provision of the ACA (according to polling conducted by Kaiser Family Foundation).

This month’s Kaiser Health Tracking Poll finds that one-third of the public (36 percent) are aware that Congress has a passed a law repealing this requirement while about half (46 percent) incorrectly say that the requirement has not been repealed. Another one in five (18 percent) are unsure of whether the individual mandate has been repealed or not. The results are similar when we look at those who are more likely to be impacted by this legislative change – the uninsured and those who buy their insurance through the individual market under the age of 65. Among this group, about four in ten (37 percent) are aware the individual mandate has been repealed, while 44 percent say it has not been repealed and 19 percent are unsure.

On the other hand, a majority of the public (68 percent) are aware that the ACA is still in effect, while one in five (17 percent) say it has been repealed and is no longer in effect and 14 percent are unsure.

However, there's another problem with the wording of the survey question: It doesn't ask whether they know when the mandate repeal goes into effect. Only 36% of the public knows it's been repealed (which I suppose is a good thing under the circumstances, since it means the other 64% think it's still in effect...which of course it is until next year). Of those 36%, however, I'd love to know how many are aware of when the repeal kicks into effect. I'd be willing to bet the answer is "very few of them".

The GOP has been touting its repeal of the Affordable Care Act's individual mandate, one of the least popular pieces of the law. Yet this tax season, mandate enforcement is actually ramping up — and the White House is nervous about it.

Between the lines: This year, taxpayers will have to tell the IRS whether they had health care coverage — and pay a penalty if they didn't. Some Republicans worry the enforcement could awkwardly clash with their messaging about the mandate being gone.

The issue: Since the ACA was enacted, the IRS had accepted "silent returns" — tax returns with the section indicating whether a person has ACA-compliant health insurance left blank.

This year is the first time that taxpayers must fill out the section in order for the IRS to accept their returns.

There were about 8 million silent returns filed for tax year 2016, according to the Taxpayer Advocate Service.